Paulina Majchrzak

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The electrical transport and optical properties of van der Waals materials are shaped by the complex interactions between charge, lattice, and spin, all encoded in their surface electronic structure. By engineering two-dimensional heterostructures, and applying external perturbations such as electric fields, this delicate balance can be continuously tuned within a single material platform, opening up a route towards quantum phenomena “by design”.
In this talk, I will highlight angle-resolved photoemission spectroscopy (ARPES) as a powerful tool for revealing dominant many-body effects and informing strategies to enhance electronic correlations. Using model systems such as twisted bilayer graphene and twisted transition metal dichalcogenides, I will show how nanoscale ARPES bridges the gap between spectroscopy and transport, providing insight into the underlying design principles for engineering electronic properties. Together, these results establish ARPES not only as a diagnostic of emergent behaviour, but as a guide for controlling it.

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Stanford University
PH2
Contact: Erwann Bocquillon / Matteo Cacco